Only exporting to google task, why not 2 way sync?

Only exporting to google task, why not 2 way sync?

We export our tasks to Google calendar, We then in the google calendar or our mobile, add a comments and close the task, but Zoho does not update this! I also tried to change the due date in calendar, and zoho still has the old date

I the Zoho settings, there is written;  You can export tasks from Zoho CRM to Google Tasks.

Is on only export the task. I think that i's important that an exportet task can be updated, and that updated are changes also in Zoho, like the normal 2 Way sync.